USB: remove unnecessary type casting of urb->context

urb->context code cleanup

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index b486a54..8a21764 100644
--- a/drivers/usb/serial/iuu_phoenix.c
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -186,7 +186,7 @@
 
 static void iuu_rxcmd(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);
 
@@ -240,7 +240,7 @@
  */
 static void iuu_update_status_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct iuu_private *priv = usb_get_serial_port_data(port);
 	u8 *st;
 	dbg("%s - enter", __func__);
@@ -270,7 +270,7 @@
 
 static void iuu_status_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);
 
@@ -392,7 +392,7 @@
 
 static void iuu_led_activity_on(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	char *buf_ptr = port->write_urb->transfer_buffer;
 	*buf_ptr++ = IUU_SET_LED;
@@ -413,7 +413,7 @@
 
 static void iuu_led_activity_off(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	char *buf_ptr = port->write_urb->transfer_buffer;
 	if (xmas == 1) {
@@ -616,7 +616,7 @@
 
 static void read_buf_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	struct tty_struct *tty;
 	dbg("%s - urb->status = %d", __func__, urb->status);
@@ -692,7 +692,7 @@
 
 static void iuu_uart_read_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	struct iuu_private *priv = usb_get_serial_port_data(port);
 	unsigned int flags;
 	int status;
@@ -781,7 +781,7 @@
 
 static void read_rxcmd_callback(struct urb *urb)
 {
-	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+	struct usb_serial_port *port = urb->context;
 	int result;
 	dbg("%s - enter", __func__);